Specific Gravity Values of Selected Gems

In order to identify gemstones, gemologists often measure their density or specific gravity. The International Gem Society provides a comprehensive table that lists the specific gravity values for a variety of gem materials. This table includes values for gemstones commonly found in collections, as well as some more rarely encountered materials. The specific gravity values help gemologists distinguish between different gemstones and are an important tool in the field of gemology.

Introduction

Measuring specific gravity is an important tool used by gemologists to identify gemstones. Specific gravity is the ratio of the density of a substance to the density of water. It is a useful characteristic to determine the authenticity and type of gemstone. In this article, we will provide a comprehensive list of specific gravity values for various gem materials commonly found in gem and jewelry collections.

Gemstone Density

Gemstone density, also known as specific gravity, is a measure of a gemstone’s weight relative to the weight of an equal volume of water. This property helps gemologists determine the identity of gemstones since different gem materials have distinctive specific gravity values.

Gold

Gold is a precious metal that has a specific gravity ranging from 15.50 to 19.30. Its high specific gravity makes it one of the heaviest materials used in jewelry making. This characteristic is one of the reasons why gold is highly valued and sought after.

Thorianite

Thorianite is a rare radioactive mineral that belongs to the thorite group. It has a specific gravity ranging from 9.70 to 9.80. The high specific gravity of thorianite makes it significantly heavier than most other gemstones.

Silver

Silver is a precious metal with a specific gravity ranging from 9.60 to 12.00. It is famous for its lustrous white color and is often used in jewelry and silverware. The high specific gravity of silver contributes to its valuable and dense nature.

Algondonite

Algondonite is a rare copper sulfide mineral with a specific gravity of 8.38. It is known for its unique green color and metallic luster. Algondonite is often used as a collector’s stone due to its rarity and distinctive properties.

Bismutotantalite

Bismutotantalite is a rare tantalum oxide mineral that belongs to the columbite-tantalite group. It has a specific gravity ranging from 8.15 to 8.89. Bismutotantalite is valued for its rich brown to black color and is often used as a gemstone or collector’s item.

Cinnabar

Cinnabar is a bright red mercury sulfide mineral with a specific gravity ranging from 8.00 to 8.20. It is highly valued for its vibrant color and is often used as a pigment in traditional art and as a gemstone in jewelry.

Stolzite

Stolzite is a tungstate mineral that has a specific gravity ranging from 7.90 to 8.34. It is known for its yellow to reddish-brown color and high luster. Stolzite is a popular choice for gemstone collectors due to its rarity and aesthetic appeal.

Niccolite

Niccolite is a nickel arsenide mineral that has a specific gravity of 7.78. It is prized for its silver-white color and metallic luster. Niccolite is often used in jewelry and as a source of nickel, making it both aesthetically pleasing and economically valuable.

Manganotantalite

Manganotantalite is a rare tantalum-niobium oxide mineral with a specific gravity ranging from 7.73 to 7.97. It is known for its dark brown to black color and is valued for its rarity and unique composition. Manganotantalite is often used as a collector’s stone.

Melonite

Melonite is a nickel arsenide mineral with a specific gravity of 7.72. It is characterized by its metallic black color and high luster. Melonite is a popular choice for gemstone enthusiasts due to its unique appearance and rarity.

Breithauptite

Breithauptite is a nickel antimonide mineral that has a specific gravity ranging from 7.59 to 8.23. It is known for its metallic white to silver color and high luster. Breithauptite is a prized gemstone for its rarity and eye-catching appearance.

Stibiotantalite

Stibiotantalite is a tantalum antimony oxide mineral with a specific gravity of 7.53. It is valued for its dark brown to black color and metallic luster. Stibiotantalite is often used as a collector’s stone due to its unique composition and aesthetic appeal.

Mimetite

Mimetite is a lead arsenate chloride mineral that has a specific gravity of 7.24. It is prized for its vibrant yellow to orange color and high luster. Mimetite is a popular gemstone in jewelry making due to its unique appearance and rarity.

Huebnerite

Huebnerite is a manganese tungstate mineral with a specific gravity ranging from 7.12 to 7.18. It is known for its dark brown to black color and metallic luster. Huebnerite is often used as a gemstone or collector’s item due to its aesthetic appeal and scarcity.

Wolframite

Wolframite is a tungsten iron manganese oxide mineral with a specific gravity ranging from 7.10 to 7.60. It is valued for its dark brown to black color and metallic luster. Wolframite is often used in jewelry making and as an industrial material due to its high tungsten content.

Gadolinium gallium garnet (GGG)

Gadolinium gallium garnet (GGG) is a synthetic gem material with a specific gravity ranging from 7.00 to 7.09. It is known for its high refractive index and vibrant colors. GGG is often used as a diamond simulant or in decorative jewelry pieces.

Cassiterite

Cassiterite is a tin oxide mineral that has a specific gravity ranging from 6.70 to 7.10. It is prized for its brown to black color and high luster. Cassiterite is commonly used as a gemstone and as the primary ore of tin.

Wulfenite

Wulfenite is a lead molybdate mineral with a specific gravity ranging from 6.50 to 7.00. It is valued for its vibrant orange to yellow color and high luster. Wulfenite is often used as a collector’s stone due to its unique appearance and rarity.

Vanadinite

Vanadinite is a lead chlorovanadate mineral with a specific gravity ranging from 6.50 to 7.10. It is known for its vibrant red to orange color and high luster. Vanadinite is often used as a gemstone or collector’s item for its distinct coloration.

Cerussite

Cerussite is a lead carbonate mineral with a specific gravity ranging from 6.46 to 6.57. It is prized for its white to colorless or pale yellow color and high luster. Cerussite is commonly used as a gemstone or in ornamental objects due to its unique properties.

Cobaltite

Cobaltite is a cobalt arsenic sulfide mineral with a specific gravity of 6.33. It is known for its metallic silver-gray color and high luster. Cobaltite is often used as a collector’s stone due to its rarity and distinctive appearance.

Anglesite

Anglesite is a lead sulfate mineral with a specific gravity ranging from 6.30 to 6.39. It is valued for its colorless to white or pale yellow color and high luster. Anglesite is commonly used as a gemstone or in decorative objects.

Phosgenite

Phosgenite is a lead chlorocarbonate mineral with a specific gravity of 6.13. It is known for its colorless to gray or pale yellow color and glassy luster. Phosgenite is often used as a gemstone or in ornamental jewelry due to its transparency and unique properties.

Simpsonite

Simpsonite is a lead borate mineral with a specific gravity ranging from 5.92 to 6.84. It is prized for its pale yellow to yellow-green color and high luster. Simpsonite is often used as a collector’s stone for its rarity and aesthetic appeal.

Scheelite

Scheelite is a calcium tungstate mineral with a specific gravity ranging from 5.90 to 6.30. It is valued for its vibrant yellow to orange color and high luster. Scheelite is commonly used as a gemstone or in industrial applications due to its tungsten content.

Crocoite

Crocoite is a lead chromate mineral with a specific gravity ranging from 5.90 to 6.10. It is known for its vibrant red to orange color and high luster. Crocoite is often used as a gemstone or in decorative objects for its unique appearance.

Cuprite

Cuprite is a copper oxide mineral with a specific gravity ranging from 5.85 to 6.15. It is prized for its deep red to reddish brown color and high luster. Cuprite is commonly used as a gemstone or in ornamental carvings.

Pyrargyrite

Pyrargyrite is a silver antimony sulfosalt mineral with a specific gravity of 5.85. It is known for its deep red to blackish red color and metallic luster. Pyrargyrite is often used as a gemstone or in collector’s items due to its distinctive appearance.

Yttrotantalite

Yttrotantalite is a rare yttrium tantalate mineral with a specific gravity of 5.70. It is valued for its brown to black color and high luster. Yttrotantalite is often used as a collector’s stone for its rarity and unique properties.

Zincite

Zincite is a zinc oxide mineral with a specific gravity of 5.66. It is prized for its bright yellow to red color and high luster. Zincite is commonly used as a gemstone and in industrial applications for its unique properties.

Proustite

Proustite is a silver arsenic sulfide mineral with a specific gravity ranging from 5.51 to 5.64. It is known for its vibrant red to deep crimson color and high luster. Proustite is often used as a gemstone or collector’s item due to its striking appearance.

Descloizite

Descloizite is a lead zinc vanadate mineral with a specific gravity ranging from 5.50 to 6.20. It is valued for its brown to black color and high luster. Descloizite is commonly used as a gemstone or in collector’s items.

Chalcosite

Chalcosite is a copper sulfide mineral with a specific gravity ranging from 5.50 to 5.80. It is prized for its metallic gray to black color and high luster. Chalcosite is often used as a gemstone or in metallurgical applications.

Cubic zirconia (CZ)

Cubic zirconia (CZ) is a synthetic gem material with a specific gravity ranging from 5.50 to 6.00. It is often used as a diamond simulant due to its high refractive index and diamond-like appearance. CZ is a popular choice for affordable jewelry and gemstone imitations.

Millerite

Millerite is a nickel sulfide mineral with a specific gravity of 5.50. It is known for its metallic silver color and high luster. Millerite is often used as a collector’s stone due to its unique appearance and rarity.

Fergusonite

Fergusonite is a rare yttrium niobate mineral with a specific gravity ranging from 5.35 to 5.44. It is prized for its black to brown color and high luster. Fergusonite is commonly used as a collector’s stone for its scarcity and aesthetic appeal.

Euxenite

Euxenite is a rare complex oxide mineral with a specific gravity ranging from 5.30 to 5.90. It is valued for its black to brown color and high luster. Euxenite is often used as a collector’s stone due to its unique composition and scarcity.

Linarite

Linarite is a lead copper sulfate mineral with a specific gravity of 5.30. It is known for its deep blue color and high luster. Linarite is often used as a gemstone or in collector’s items due to its attractive appearance.

Senarmontite

Senarmontite is an antimony oxide mineral with a specific gravity ranging from 5.20 to 5.50. It is prized for its white to colorless color and high luster. Senarmontite is commonly used as a gemstone or in industrial applications for its unique properties.

Magnetite

Magnetite is an iron oxide mineral with a specific gravity of 5.20. It is known for its black color and high magnetic properties. Magnetite is often used as a gemstone or in industrial applications for its magnetic properties.

Aeschynite

Aeschynite is a complex oxide mineral with a specific gravity of 5.19. It is valued for its black to brown color and high luster. Aeschynite is commonly used as a collector’s stone for its unique composition and aesthetic appeal.

Tantalite

Tantalite is a rare iron manganese tantalum niobium oxide mineral with a specific gravity ranging from 5.18 to 8.20. It is known for its black to brown color and high luster. Tantalite is often used as a collector’s stone or in industrial applications.

Hematite

Hematite is an iron oxide mineral with a specific gravity ranging from 5.12 to 5.28. It is prized for its metallic gray to black color and high luster. Hematite is commonly used as a gemstone or in industrial applications for its unique properties.

Fabulite (Tausonite)

Fabulite, also known as tausonite, is a rare beryllium aluminum borate mineral with a specific gravity ranging from 5.11 to 5.15. It is valued for its yellow to green color and high luster. Fabulite is often used as a collector’s stone for its rarity and aesthetic appeal.

Bornite

Bornite, also known as peacock ore, is a copper iron sulfide mineral with a specific gravity ranging from 5.06 to 5.08. It is known for its iridescent purple, blue, and gold colors. Bornite is often used as a gemstone or in collector’s items for its vibrant hues.

Boleite

Boleite is a complex lead copper silver chloride hydroxide mineral with a specific gravity of 5.05. It is prized for its vibrant blue color and high luster. Boleite is commonly used as a gemstone or in collector’s items for its distinctive appearance.

Samarskite

Samarskite is a rare niobium tantalum oxide mineral with a specific gravity ranging from 5.00 to 5.69. It is valued for its black to brown color and metallic luster. Samarskite is often used as a collector’s stone due to its rarity and unique composition.

Pyrite

Pyrite is an iron sulfide mineral with a specific gravity ranging from 5.00 to 5.20. It is known for its metallic yellow color and high luster. Pyrite is often used as a gemstone or in industrial applications for its striking appearance.

Monazite

Monazite is a rare earth phosphate mineral with a specific gravity ranging from 4.98 to 5.43. It is prized for its brown to reddish-brown color and high luster. Monazite is commonly used as a collector’s stone or in industrial applications for its unique properties.

Bixbyite

Bixbyite is a manganese iron oxide mineral with a specific gravity of 4.93. It is known for its black color and high luster. Bixbyite is often used as a gemstone or in collector’s items for its unique appearance.

Marcasite

Marcasite is an iron sulfide mineral with a specific gravity ranging from 4.83 to 4.92. It is valued for its metallic pale yellow to bronze color and high luster. Marcasite is commonly used as a gemstone or in decorative objects for its unique properties.

Greenockite

Greenockite is a rare cadmium sulfide mineral with a specific gravity ranging from 4.73 to 4.79. It is known for its vibrant yellow color and high luster. Greenockite is often used as a collector’s stone or in industrial applications for its unique properties.

Psilomelane (Manganese oxide)

Psilomelane is a manganese oxide mineral with a specific gravity ranging from 4.70 to 4.74. It is prized for its black color and high luster. Psilomelane is commonly used as a gemstone or in decorative objects for its distinct appearance.

Linobate (Lithium niobate)

Linobate, also known as lithium niobate, is a synthetic gem material with a specific gravity ranging from 4.64 to 4.66. It is often used as an alternative to natural gemstones for its unique optical and electrical properties. Linobate is commonly used in electronic devices and scientific applications.

Pentlandite

Pentlandite is a nickel iron sulfide mineral with a specific gravity ranging from 4.60 to 5.00. It is known for its metallic bronze color and high luster. Pentlandite is often used as a collector’s stone or in industrial applications for its unique properties.

Covellite

Covellite is a copper sulfide mineral with a specific gravity ranging from 4.60 to 4.76. It is valued for its indigo to dark blue color and metallic luster. Covellite is commonly used as a gemstone or in collector’s items for its distinctive appearance.

Yttrium aluminum garnet (YAG)

Yttrium aluminum garnet (YAG) is a synthetic gem material with a specific gravity ranging from 4.55 to 4.65. It is often used as a diamond simulant due to its high refractive index and gem-like appearance. YAG is a popular choice for affordable jewelry and gemstone imitations.

Ilmenite

Ilmenite is an iron titanium oxide mineral with a specific gravity ranging from 4.50 to 5.00. It is known for its black color and metallic luster. Ilmenite is commonly used as a gemstone or in industrial applications due to its titanium content.

Pyrolusite

Pyrolusite is a manganese oxide mineral with a specific gravity ranging from 4.50 to 5.00. It is prized for its black color and metallic luster. Pyrolusite is often used as a gemstone or in industrial applications for its unique properties.

Chromite

Chromite is an iron chromium oxide mineral with a specific gravity ranging from 4.50 to 4.80. It is valued for its black color and high luster. Chromite is commonly used as a gemstone or in industrial applications for its chromium content.

Davidite

Davidite is a complex uranium titanium iron oxide mineral with a specific gravity of 4.50. It is known for its black color and high luster. Davidite is often used as a collector’s stone for its unique composition and scarcity.

Barite

Barite is a barium sulfate mineral with a specific gravity ranging from 4.43 to 4.46. It is prized for its white to colorless or pale yellow color and high luster. Barite is commonly used as a gemstone or in industrial applications for its unique properties.

Magnesiochromite

Magnesiochromite is a magnesium chromium oxide mineral with a specific gravity ranging from 4.39 to 4.67. It is known for its black color and high luster. Magnesiochromite is often used as a gemstone or in industrial applications for its unique properties.

Bayldonite

Bayldonite is a complex copper lead arsenate hydroxide mineral with a specific gravity of 4.35. It is prized for its green to yellowish-green color and high luster. Bayldonite is commonly used as a collector’s stone or in decorative objects for its unique appearance.

Parisite

Parisite is a rare calcium cerium lanthanum neodymium iron magnesium phosphate carbonate hydroxide mineral with a specific gravity ranging from 4.33 to 4.42. It is valued for its brown to yellow color and high luster. Parisite is often used as a collector’s stone for its rarity and distinctive appearance.

Microlite

Microlite is a rare sodium calcium tantalum oxide mineral with a specific gravity ranging from 4.30 to 5.70. It is known for its brown to black color and high luster. Microlite is often used as a collector’s stone or in jewelry making for its unique composition and scarcity.

Adamite

Adamite is a zinc arsenate hydroxide mineral with a specific gravity ranging from 4.30 to 4.68. It is prized for its green to yellow-green color and high luster. Adamite is commonly used as a gemstone or in collector’s items for its unique appearance.

Witherite

Witherite is a barium carbonate mineral with a specific gravity ranging from 4.27 to 4.79. It is valued for its white to colorless or pale yellow color and high luster. Witherite is commonly used as a gemstone or in industrial applications for its unique properties.

Galaxite

Galaxite is a rare variety of labradorite feldspar with a specific gravity of 4.23. It is known for its black color and iridescent play-of-color. Galaxite is often used as a gemstone or in decorative objects for its unique appearance.

Powellite

Powellite is a calcium molybdate mineral with a specific gravity of 4.23. It is prized for its yellow to yellow-green color and high luster. Powellite is commonly used as a collector’s stone or in jewelry making for its vibrant hues.

Rutile

Rutile is a titanium dioxide mineral with a specific gravity ranging from 4.20 to 4.30. It is valued for its golden to reddish-brown color and high luster. Rutile is often used as a gemstone or in industrial applications for its titanium content.

Spessartite garnet

Spessartite garnet, also known as mandarin garnet, is a variety of garnet with a specific gravity ranging from 4.12 to 4.18. It is prized for its vibrant orange to reddish-orange color and high luster. Spessartite garnet is commonly used as a gemstone in jewelry making.

Shattuckite

Shattuckite is a copper silicate hydroxide mineral with a specific gravity of 4.11. It is known for its vibrant blue to green-blue color and high luster. Shattuckite is often used as a collector’s stone or in jewelry making for its unique appearance.

Chalcopyrite

Chalcopyrite is a copper iron sulfide mineral with a specific gravity ranging from 4.10 to 4.30. It is prized for its brass-yellow color and metallic luster. Chalcopyrite is commonly used as a gemstone or in industrial applications for its copper content.

Wurtzite

Wurtzite is a zinc iron sulfide mineral with a specific gravity of 4.09. It is valued for its black color and high luster. Wurtzite is often used as a gemstone or in collector’s items for its unique appearance.

Brookite

Brookite is a titanium dioxide mineral with a specific gravity ranging from 4.08 to 4.18. It is known for its brown to black color and high luster. Brookite is commonly used as a gemstone or in collector’s items for its unique properties.

Hancockite

Hancockite is a rare thallium antimony sulfosalt mineral with a specific gravity of 4.03. It is prized for its metallic silver color and high luster. Hancockite is often used as a collector’s stone or in jewelry making for its distinctive appearance.

Painite

Painite is a borate mineral with a specific gravity of 4.01. It is known for its brown color and high luster. Painite is one of the rarest gemstones in the world and is highly coveted by collectors for its scarcity and unique properties.

Gadolinite

Gadolinite is a rare yttrium iron beryllium silicate mineral with a specific gravity ranging from 4.00 to 4.65. It is prized for its black to brown color and high luster. Gadolinite is often used as a collector’s stone for its rarity and aesthetic appeal.

Smithsonite

Smithsonite is a zinc carbonate mineral with a specific gravity ranging from 4.00 to 4.65. It is valued for its white to colorless or pale blue color and high luster. Smithsonite is commonly used as a gemstone or in decorative objects for its unique properties.

Gahnite

Gahnite is a zinc aluminum iron oxide mineral with a specific gravity ranging from 4.00 to 4.62. It is known for its green to greenish-blue color and high luster. Gahnite is often used as a collector’s stone or in jewelry making for its unique appearance.

Legrandite

Legrandite is a rare zinc arsenate mineral with a specific gravity ranging from 3.98 to 4.04. It is prized for its yellow to yellow-green color and high luster. Legrandite is commonly used as a collector’s stone for its rarity and distinctive appearance.

Ruby

Ruby is a variety of the mineral corundum with a specific gravity ranging from 3.97 to 4.05. It is known for its vibrant red color and high luster. Ruby is one of the most valuable gemstones and is often used in high-end jewelry.

Celestite

Celestite is a strontium sulfate mineral with a specific gravity of 3.97 to 4.00. It is valued for its pale blue to colorless color and high luster. Celestite is often used as a gemstone or in decorative objects for its unique properties.

Libethenite

Libethenite is a copper phosphate mineral with a specific gravity of 3.97. It is known for its vibrant green color and high luster. Libethenite is often used as a collector’s stone or in jewelry making for its distinctive appearance.

Ferrosilite

Ferrosilite is an iron silicate mineral with a specific gravity of 3.96. It is prized for its greenish-gray to black color and high luster. Ferrosilite is commonly used as a gemstone or in collector’s items for its unique properties.

Sapphire

Sapphire is a variety of the mineral corundum with a specific gravity ranging from 3.95 to 4.03. It is valued for its blue color, although it can come in a variety of colors including yellow, pink, and green. Sapphire is one of the most popular and valuable gemstones.

Durangite

Durangite is a sulfate mineral with a specific gravity ranging from 3.94 to 4.07. It is known for its bright blue to green color and high luster. Durangite is often used as a collector’s stone or in jewelry making for its unique appearance.

Zircon

Zircon is a zirconium silicate mineral with a specific gravity ranging from 3.93 to 4.73. It is prized for its dispersion and brilliance, which gives it a lot of fire and sparkle. Zircon is commonly used as a gemstone and in industrial applications.

Almandine garnet

Almandine garnet is a variety of garnet with a specific gravity ranging from 3.93 to 4.30. It is known for its deep red to reddish-brown color and high luster. Almandine garnet is commonly used as a gemstone and in jewelry making.

Hodgkinsonite

Hodgkinsonite is a rare thallium bismuth sulfosalt mineral with a specific gravity ranging from 3.91 to 3.99. It is prized for its metallic silver color and high luster. Hodgkinsonite is often used as a collector’s stone or in decorative objects for its unique properties.

Sphalerite

Sphalerite is a zinc sulfide mineral with a specific gravity ranging from 3.90 to 4.10. It is valued for its brown to black color and high luster. Sphalerite is commonly used as a gemstone and in industrial applications for its zinc content.

Willemite

Willemite is a zinc silicate mineral with a specific gravity ranging from 3.89 to 4.18. It is known for its green to yellow-green color and high luster. Willemite is often used as a gemstone or in industrial applications for its unique properties.

Tephroite

Tephroite is a manganese iron silicate mineral with a specific gravity ranging from 3.87 to 4.12. It is prized for its pink to pale rose color and high luster. Tephroite is commonly used as a gemstone or in collector’s items for its distinctive appearance.

Siderite

Siderite is an iron carbonate mineral with a specific gravity ranging from 3.83 to 3.96. It is valued for its brown to yellow color and high luster. Siderite is often used as a gemstone or in industrial applications due to its iron content.

Anatase

Anatase is a titanium dioxide mineral with a specific gravity ranging from 3.82 to 3.97. It is known for its brown to black color and high luster. Anatase is commonly used as a gemstone or in industrial applications due to its unique properties.

Goethite

Goethite is an iron hydroxide mineral with a specific gravity ranging from 3.80 to 4.30. It is prized for its brown to black color and metallic luster. Goethite is often used as a gemstone or in industrial applications for its iron content.

Gaspéite

Gaspéite is a rare nickel magnesium carbonate mineral with a specific gravity of 3.71. It is valued for its vibrant green color and high luster. Gaspéite is commonly used as a collector’s stone or in jewelry making for its unique appearance.

Andradite garnet

Andradite garnet is a variety of garnet with a specific gravity ranging from 3.70 to 4.10. It is known for its brown to black color and high luster. Andradite garnet is commonly used as a gemstone and in jewelry making.

Azurite

Azurite is a copper carbonate hydroxide mineral with a specific gravity ranging from 3.70 to 3.90. It is prized for its deep blue to violet-blue color and high luster. Azurite is often used as a gemstone or in decorative objects for its vibrant hues.

Periclase

Periclase is a magnesium oxide mineral with a specific gravity ranging from 3.70 to 3.90. It is valued for its colorless to gray color and high luster. Periclase is commonly used as a gemstone or in industrial applications for its unique properties.

Chrysoberyl (Cat’s eye, Alexandrite)

Chrysoberyl is an aluminum beryllium oxide mineral with a specific gravity ranging from 3.70 to 3.78. It is known for its yellow-green to green color, although it can exhibit different colors under different lighting conditions. Chrysoberyl is commonly used as a gemstone and in jewelry making.

Schorlomite

Schorlomite is a rare iron titanium oxide mineral with a specific gravity ranging from 3.69 to 3.88. It is prized for its black color and high luster. Schorlomite is often used as a collector’s stone for its unique composition and scarcity.

Barytocalcite

Barytocalcite is a rare calcium barium carbonate mineral with a specific gravity of 3.66. It is valued for its white to colorless color and high luster. Barytocalcite is commonly used as a collector’s stone or in decorative objects for its unique appearance.

Staurolite

Staurolite is an aluminum iron silicate mineral with a specific gravity ranging from 3.65 to 3.77. It is known for its brown to black color and distinct cross-shaped twinning. Staurolite is often used as a gemstone or in decorative objects for its unique properties.

Benitoite

Benitoite is a rare barium titanium silicate mineral with a specific gravity ranging from 3.64 to 3.68. It is prized for its vibrant blue color and high luster. Benitoite is the official state gem of California and is highly sought after by collectors.

Strontianite

Strontianite is a strontium carbonate mineral with a specific gravity ranging from 3.63 to 3.79. It is valued for its white to colorless or pale yellow color and high luster. Strontianite is often used as a gemstone or in industrial applications for its unique properties.

Pyrope garnet

Pyrope garnet is a variety of garnet with a specific gravity ranging from 3.62 to 3.87. It is known for its deep red to reddish-brown color and high luster. Pyrope garnet is commonly used as a gemstone and in jewelry making.

Pyroxmangite

Pyroxmangite is a manganese silicate mineral with a specific gravity ranging from 3.61 to 3.80. It is prized for its pink to red color and high luster. Pyroxmangite is often used as a gemstone or in collector’s items for its distinctive appearance.

Holtite

Holtite is a rare calcium manganese zinc silicate mineral with a specific gravity ranging from 3.60 to 3.90. It is valued for its white to colorless color and high luster. Holtite is commonly used as a collector’s stone or in decorative objects for its unique appearance.

Taafeite

Taafeite is a rare beryllium aluminum silicate mineral with a specific gravity ranging from 3.60 to 3.62. It is known for its pink to lavender color and high luster. Taafeite is often used as a collector’s stone or in jewelry making for its rarity and unique properties.

Grossular garnet

Grossular garnet is a variety of garnet with a specific gravity ranging from 3.56 to 3.73. It is prized for its green to brown color and high luster. Grossular garnet is commonly used as a gemstone and in jewelry making.

Realgar

Realgar is an arsenic sulfide mineral with a specific gravity of 3.56. It is known for its vibrant red to orange-red color and high luster. Realgar is often used as a collector’s stone or in decorative objects for its distinctive appearance.

Spinel

Spinel is a magnesium aluminum oxide mineral with a specific gravity ranging from 3.54 to 3.63. It is valued for its wide range of colors, including red, pink, blue, purple, and black. Spinel is commonly used as a gemstone and in jewelry making.

Kyanite

Kyanite is an aluminum silicate mineral with a specific gravity ranging from 3.53 to 3.70. It is known for its blue to colorless color and high luster. Kyanite is often used as a gemstone or in industrial applications for its unique properties.

Nambulite

Nambulite is a rare lithium aluminum silicate mineral with a specific gravity of 3.53. It is prized for its pink to reddish color and high luster. Nambulite is often used as a collector’s stone or in jewelry making for its rarity and distinctive appearance.

Sphene (Titanite)

Sphene, also known as titanite, is a calcium titanium silicate mineral with a specific gravity ranging from 3.52 to 3.54. It is valued for its green to yellow-green color and high luster. Sphene is commonly used as a gemstone and in jewelry making.

Allanite

Allanite is a complex cerium calcium iron aluminum silicate mineral with a specific gravity ranging from 3.50 to 4.20. It is known for its black to brown color and high luster. Allanite is often used as a collector’s stone or in decorative objects for its unique appearance.

Aegirine

Aegirine is a sodium iron silicate mineral with a specific gravity ranging from 3.50 to 3.60. It is prized for its green to green-black color and high luster. Aegirine is commonly used as a gemstone or in industrial applications for its unique properties.

Hedenbergite

Hedenbergite is a calcium iron silicate mineral with a specific gravity ranging from 3.50 to 3.56. It is valued for its green to gray-green color and high luster. Hedenbergite is often used as a collector’s stone or in jewelry making for its distinctive appearance.

Diamond

Diamond is a carbon mineral with a specific gravity ranging from 3.50 to 3.53. It is known for its exceptional hardness and brilliance, making it one of the most desirable gemstones. Diamonds are often used in high-end jewelry and are highly valued for their rarity and beauty.

Topaz

Topaz is an aluminum fluorosilicate mineral with a specific gravity ranging from 3.49 to 3.57. It is prized for its wide range of colors, including yellow, orange, pink, blue, and brown. Topaz is commonly used as a gemstone and in jewelry making.

Chambersite

Chambersite is a rare hydrated potassium sodium iron lithium aluminum silicate mineral with a specific gravity of 3.49. It is valued for its white to gray color and high luster. Chambersite is often used as a collector’s stone for its rarity and distinctive appearance.

Sinhalite

Sinhalite is a magnesium aluminum borate mineral with a specific gravity ranging from 3.46 to 3.50. It is known for its yellow to brown color and high luster. Sinhalite is commonly used as a gemstone and in collector’s items.

Rhodochrosite

Rhodochrosite is a manganese carbonate mineral with a specific gravity ranging from 3.45 to 3.70. It is prized for its pink to red color and high luster. Rhodochrosite is often used as a gemstone and in decorative objects.

Piedmontite

Piedmontite is a calcium iron manganese aluminosilicate mineral with a specific gravity ranging from 3.45 to 3.52. It is valued for its brown to reddish-brown color and high luster. Piedmontite is commonly used as a collector’s stone or in decorative objects for its unique appearance.

Euchroite

Euchroite is a rare copper arsenate hydroxide mineral with a specific gravity of 3.44. It is known for its green color and high luster. Euchroite is often used as a collector’s stone or in jewelry making for its unique properties.

Rhodizite

Rhodizite is a rare beryllium aluminum borate mineral with a specific gravity of 3.44. It is prized for its colorless to pale yellow color and high luster. Rhodizite is commonly used as a collector’s stone or in jewelry making for its rarity and distinctive appearance.

Uvarovite garnet

Uvarovite garnet is a variety of garnet with a specific gravity ranging from 3.41 to 3.52. It is valued for its vibrant green color and high luster. Uvarovite garnet is commonly used as a gemstone and in jewelry making.

Rhodonite

Rhodonite is a manganese silicate mineral with a specific gravity ranging from 3.40 to 3.74. It is known for its pink to red color and high luster. Rhodonite is often used as a gemstone or in decorative objects for its distinctive appearance.

Lithiophilite

Lithiophilite is a phosphate mineral with a specific gravity ranging from 3.40 to 3.60. It is prized for its brown to yellowish-brown color and high luster. Lithiophilite is commonly used as a collector’s stone or in jewelry making.

Sapphirine

Sapphirine is a rare magnesium aluminum silicate mineral with a specific gravity ranging from 3.40 to 3.58. It is valued for its blue to green-blue color and high luster. Sapphirine is often used as a collector’s stone or in jewelry making for its rarity and distinctive appearance.

Aegirine-augite

Aegirine-augite is a sodium calcium iron magnesium aluminum silicate mineral with a specific gravity ranging from 3.40 to 3.55. It is prized for its green-black to black color and high luster. Aegirine-augite is commonly used as a collector’s stone or in jewelry making.

Hypersthene

Hypersthene is a calcium magnesium iron silicate mineral with a specific gravity ranging from 3.40 to 3.50. It is known for its brown to gray color and high luster. Hypersthene is often used as a collector’s stone or in jewelry making for its distinctive appearance.

Chromdravite

Chromdravite is a rare chromium lithium aluminum silicate mineral with a specific gravity ranging from 3.40 to 3.60. It is valued for its black to dark green color and high luster. Chromdravite is often used as a collector’s stone or in jewelry making for its rarity and unique properties.

Scorzalite

Scorzalite is a rare iron magnesium aluminum phosphate mineral with a specific gravity ranging from 3.38. It is valued for its blue to blue-violet color and high luster. Scorzalite is commonly used as a collector’s stone or in decorative objects for its distinctive appearance.

Tinzenite

Tinzenite is a rare calcium indium gallium iron manganese aluminum silicate mineral with a specific gravity ranging from 3.36 to 3.43. It is prized for its black color and high luster. Tinzenite is often used as a collector’s stone or in jewelry making for its rarity and distinctive appearance.

Tanzanite

Tanzanite is a blue variety of the mineral zoisite with a specific gravity of 3.35. It is known for its vivid blue to violet-blue color and high luster. Tanzanite is often used as a gemstone and in jewelry making.

Triphylite

Triphylite is a lithium iron manganese phosphate mineral with a specific gravity ranging from 3.34 to 3.58. It is prized for its gray to purplish-gray color and high luster. Triphylite is commonly used as a collector’s stone or in jewelry making.

Dickinsonite

Dickinsonite is a rare lead borate vanadate hydroxide mineral with a specific gravity ranging from 3.34 to 3.41. It is valued for its yellow to yellow-green color and high luster. Dickinsonite is often used as a collector’s stone or in jewelry making for its rarity and unique appearance.

Idocrase (Vesuvianite)

Idocrase, also known as vesuvianite, is a calcium aluminum silicate mineral with a specific gravity ranging from 3.32 to 3.47. It is known for its green to yellow-green color and high luster. Idocrase is commonly used as a gemstone and in jewelry making.

Bustamite

Bustamite is a manganese calcium silicate mineral with a specific gravity ranging from 3.32 to 3.42. It is prized for its pink to brown color and high luster. Bustamite is often used as a gemstone or in collector’s items for its unique appearance.

Serandite

Serandite is a rare sodium manganese silicate mineral with a specific gravity of 3.32. It is valued for its pink to reddish color and high luster. Serandite is commonly used as a collector’s stone or in jewelry making for its rarity and distinctive appearance.

Manganaxinite

Manganaxinite is a rare calcium manganese aluminum borate silicate mineral with a specific gravity ranging from 3.31. It is prized for its brown to brown-red color and high luster. Manganaxinite is often used as a collector’s stone or in jewelry making for its unique appearance.

Epidote

Epidote is a calcium aluminum iron silicate mineral with a specific gravity ranging from 3.30 to 3.50. It is known for its green to yellow-green color and high luster. Epidote is commonly used as a gemstone or in decorative objects for its unique properties.

Hemimorphite

Hemimorphite is a zinc silicate hydroxide mineral with a specific gravity ranging from 3.30 to 3.50. It is valued for its colorless to white or pale blue color and high luster. Hemimorphite is often used as a gemstone or in industrial applications for its unique properties.

Diaspore

Diaspore is an aluminum oxide hydroxide mineral with a specific gravity ranging from 3.30 to 3.39. It is prized for its color-changing properties, exhibiting different hues depending on the lighting conditions. Diaspore is often used as a gemstone and in jewelry making.

Jadeite

Jadeite is a variety of jade with a specific gravity ranging from 3.30 to 3.38. It is prized for its vibrant green color, although it can come in a range of colors including white, yellow, and lavender. Jadeite is one of the most valuable and sought-after gemstones.

Peridot

Peridot is a magnesium iron silicate mineral with a specific gravity ranging from 3.28 to 4.39. It is known for its vibrant green color and high luster. Peridot is commonly used as a gemstone and in jewelry making.

Dioptase

Dioptase is a copper silicate mineral with a specific gravity ranging from 3.28 to 3.35. It is valued for its vibrant emerald-green color and high luster. Dioptase is often used as a gemstone or in collector’s items for its unique appearance.

Ekanite

Ekanite is a rare calcium thorium aluminum borate silicate mineral with a specific gravity ranging from 3.28 to 3.32. It is prized for its green to yellow-green color and high luster. Ekanite is often used as a collector’s stone or in jewelry making for its rarity and unique properties.

Jeremejevite

Jeremejevite is a rare aluminum borate mineral with a specific gravity ranging from 3.28 to 3.31. It is known for its colorless to pale blue color and high luster. Jeremejevite is often used as a collector’s stone for its rarity and distinctive appearance.

Parascorodite

Parascorodite is a rare iron arsenate mineral with a specific gravity ranging from 3.28 to 3.29. It is prized for its yellow to yellow-brown color and high luster. Parascorodite is commonly used as a collector’s stone or in decorative objects for its unique appearance.

Forsterite

Forsterite is a magnesium silicate mineral with a specific gravity ranging from 3.28. It is valued for its green to yellow-green color and high luster. Forsterite is commonly used as a gemstone or in industrial applications for its unique properties.

Kornerupine

Kornerupine is a rare magnesium aluminum borate silicate mineral with a specific gravity ranging from 3.27 to 3.45. It is known for its green to brown color and high luster. Kornerupine is often used as a collector’s stone or in jewelry making for its rarity and distinctive appearance.

Dumortierite

Dumortierite is a borosilicate mineral with a specific gravity ranging from 3.26 to 3.41. It is prized for its blue to violet-blue color and high luster. Dumortierite is commonly